JDiskReport
JDiskReport is a free disk space analyzer and visualization utility that helps users understand where their storage is being consumed on macOS and Windows. It scans drives or folders and displays results using multiple views—pie charts, bar charts, and detailed tables—making it easy to identify large files and directories taking up space. The app includes features to view the 50 largest files, size distribution by file type, and modification date analysis. Because it is written in Java, JDiskReport runs cross-platform but historically has used more memory and been slower than native macOS disk analysis tools.
AI Recommendation
1 suggestionJDiskReport is a Java-based application, which means it does not have a native Apple Silicon build and likely never will—Java apps on macOS run through a compatibility layer rather than as native code. The app continues to function under Rosetta 2 on M-series Macs today, but Apple is removing Rosetta 2 in macOS 28 (September 2028), so JDiskReport will stop launching entirely on that release. Since the app appears to be no longer actively maintained (the most recent mention in search results is from a 2026 roundup comparing it to other disk analyzers), a native update is unlikely. Instead, consider switching to a native alternative: OmniDiskSweeper (free, from OmniGroup) offers fast, simple file-size listing and deletion; GrandPerspective (free, open-source) provides treemap visualization; or DaisyDisk (paid) offers the most polished native experience with the best performance on Apple Silicon. All three run natively on M-series Macs and are actively maintained, so they will continue to work after September 2028.
Recommended reading